package com.cyt.sys.util;

import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import cn.afterturn.easypoi.excel.entity.params.ExcelExportEntity;
import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
import cn.afterturn.easypoi.exception.excel.ExcelExportException;
import com.cyt.base.util.StringUtils;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;

/**
 * @author tao cong cong
 * @create 2018/11/16 下午10:28
 */
public class EasyPoiUtil {

    public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass,String fileName,boolean isCreateHeader, HttpServletResponse response){
        ExportParams exportParams = new ExportParams(title, sheetName);
        exportParams.setCreateHeadRows(isCreateHeader);
        // 如果有code码需要设置，现有bug，需要修改源码CellValueService
        exportParams.setDictHandler(new GlobalExcelDictHandler());
        defaultExport(list, pojoClass, fileName, response, exportParams);
    }

    public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass,String fileName, HttpServletResponse response){
        ExportParams exportParams = new ExportParams(title, sheetName);
        exportParams.setDictHandler(new GlobalExcelDictHandler());
        defaultExport(list, pojoClass, fileName, response, exportParams);
    }

    public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response){
        defaultExport(list, fileName, response);
    }

    public static void exportDyncExcel(List<Map<String,Object>> list, List<ExcelExportEntity> entity, String title, String sheetName, String fileName, HttpServletResponse response) {
        Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams(title, sheetName), entity, list);
        if (workbook != null) {
            downLoadExcel(fileName, response, workbook);
        }
    }

    public static void exportExcelModel(List<?> list, String fileName, String[] provinces,HttpServletResponse response,Class<?> pojoClass) throws IOException {
        Workbook workbook = ExcelExportUtil.exportExcel( new ExportParams("房间信息", "房间信息"),pojoClass,list);
        ExcelTest.setCityChangeVals(provinces,workbook,workbook.getSheetAt(0));
        EasyPoiUtil.downLoadExcel(fileName,response,workbook);
    }

    public static void exportExcelModelDevicesType(List<?> list, String fileName, String[] provinces,String[] contracts,String[] listServicer,String[] wbRooms,HttpServletResponse response,Class<?> pojoClass) throws IOException {
        Workbook workbook = ExcelExportUtil.exportExcel( new ExportParams("设备信息", "设备信息"),pojoClass,list);
        ExcelTest.setDevicesTypeVals(provinces,contracts,listServicer,wbRooms,workbook,workbook.getSheetAt(0));
        EasyPoiUtil.downLoadExcel(fileName,response,workbook);
    }

    private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams) {
        Workbook workbook = ExcelExportUtil.exportExcel(exportParams,pojoClass,list);
        if (workbook != null) {
            downLoadExcel(fileName, response, workbook);
        }
    }

    public static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) {
        try {
            response.setCharacterEncoding("UTF-8");
            response.setHeader("content-Type", "application/vnd.ms-excel");
            response.setHeader("Content-Disposition",
                    "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
            workbook.write(response.getOutputStream());
        } catch (IOException e) {
            throw new ExcelExportException(e.getMessage());
        }
    }
    private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response) {
        Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
        if (workbook != null) {
            downLoadExcel(fileName, response, workbook);
        }
    }

    public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> pojoClass){
        if (StringUtils.isBlank(filePath)){
            return null;
        }
        ImportParams params = new ImportParams();
        // 解决多读取问题，如果出现没有导入问题，需要将该属性去除
        params.setKeyIndex(0);
        // 如果有code码需要设置，现有bug，需要修改源码CellValueService
        params.setDictHandler(new GlobalExcelDictHandler());
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        List<T> list = null;
        try {
            list = ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
        }catch (NoSuchElementException e){
            throw new ExcelExportException("模板不能为空");
        } catch (Exception e) {
            e.printStackTrace();
            throw new ExcelExportException(e.getMessage());
        }
        return list;
    }
    public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass){
        if (file == null){
            return null;
        }
        ImportParams params = new ImportParams();
        // 解决多读取问题，如果出现没有导入问题，需要将该属性去除
        params.setKeyIndex(0);
        // 如果有code码需要设置，现有bug，需要修改源码CellValueService
        params.setDictHandler(new GlobalExcelDictHandler());
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        List<T> list = null;
        try {
            list = ExcelImportUtil.importExcel(file.getInputStream(), pojoClass, params);
        }catch (NoSuchElementException e){
            throw new ExcelExportException("excel文件不能为空");
        } catch (Exception e) {
            throw new ExcelExportException(e.getMessage());
        }
        return list;
    }

    public static <T> ExcelImportResult<T> importExcelResult(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass){
        if (file == null){
            return null;
        }
        ImportParams params = new ImportParams();
        // 解决多读取问题，如果出现没有导入问题，需要将该属性去除
        params.setKeyIndex(0);
        // 如果有code码需要设置，现有bug，需要修改源码CellValueService
        params.setDictHandler(new GlobalExcelDictHandler());
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        params.setNeedVerify(true);
        ExcelImportResult<T> result = null;
        try {
            result = ExcelImportUtil.importExcelMore(file.getInputStream(), pojoClass, params);
        }catch (NoSuchElementException e){
            throw new ExcelExportException("excel文件不能为空");
        } catch (Exception e) {
            throw new ExcelExportException(e.getMessage());
        }
        return result;
    }
}
